ATW
| Atlantic and Western | 1 |
BAR
| Bangor & Aroostook | 1 |
BO
| Baltimore & Ohio | 2 |
CG
| Central Of Georgia | 1 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CNJ
| Central Rail Road of New Jersey | 1 |
CR
| Conrail | 2 |
DH
| Delaware & Hudson | 2 |
DLW
| Delaware Lackawanna & Western | 1 |
ERIE
| Erie Railroad | 2 |
GA
| Georgia Railroad | 1 |
IC
| Illinois Central | 1 |
LOAM
| Lousiana Midland | 1 |
LV
| Lehigh Valley | 2 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 1 |
NH
| New Haven | 1 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 1 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 1 |
NYSW
| New York Susquehanna & Western | 2 |
PC
| Penn Central | 3 |
PRR
| Pennsylvania Railroad | 3 |
RDG
| Reading Railroad | 3 |
RI
| RI | 1 |
SAL
| Seaboard Air Line | 1 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 3 |
VTR
| Vermont Railway | 1 |
WAB
| Wabash | 1 |
WAG
| Wellsville Addison & Galeton | 1 |